What this means
The IEEE assigned the MA-M block 78E9962 to STIEBEL ELTRON GMBH & CO. KG. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 78:E9:96:2, it is STIEBEL ELTRON GMBH & CO. KG hardware.
Frequently Asked Questions
Who owns MAC prefix 78E9962?
78E9962 is registered to STIEBEL ELTRON GMBH & CO. KG in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. STIEBEL ELTRON GMBH & CO. KG's block covers 1,048,576 addresses.
What devices use 78E9962?
Any network device with a MAC address starting 78:E9:96:2 was manufactured by or for STIEBEL ELTRON GMBH & CO. KG.